While the Ethereum is arguably decentralized, maybe, kind-of, the other ones: XRP, Solana, and Cardano, are basically centralized nonsense, that at best can be considered a payment system and not a decentralized commodity.
Time will show us that all of them are shitcoins in the end. But don't take my word for it, just wait and see.
The real long term value is and always was due to a trustworthy, sovereign store of value properties. Trying to compete with Visa or Venmo, or enable online gambling is catchy, but does mean anything, as nothing there requires the underlying shitcoin asset. Stablecoins are far better at that, but it's hard to sell a sucker idea that the stabelcoin is going to "moon".
I'll just let you down easy here, the strategy involved is little else than legitimizing a market rife with fraud. Call them shitcoins all you like, Trump is happy to treat them with the same "strategic" levity he attributes to Bitcoin. Are you sensing a pattern, at all?